التفاصيل البيبلوغرافية
| العنوان: |
Microcavity enhancement vs Auger recombination in variable thickness type-II superlattices in resonant cavity mid-infrared light emitting diodes. |
| المؤلفون: |
Schrock, K. N., Montealegre, D. A., Dai, W., Bellus, M. Z., Nichols, L. M., Prineas, J. P. |
| المصدر: |
Journal of Applied Physics; 5/14/2024, Vol. 135 Issue 18, p1-12, 12p |
| مصطلحات موضوعية: |
LIGHT emitting diodes, ELECTRON-hole recombination, SUPERLATTICES, QUANTUM wells |
| مستخلص: |
In this study, we investigate the tradespace between the improvement of mid-infrared light-emitting diode efficiency through microcavity enhancement vs reduction of Auger recombination for different W-superlattice thicknesses. Several sample designs are modeled and then grown and fabricated to test the tradespace at different W-superlattice thicknesses down to the quantum well limit. In a half-cavity, with a single reflector from the top metal contact, intermediate thickness W-superlattices gave the highest efficiencies, outperforming those in the W-quantum well limit across the entire measured current range. Experimentally, we report wallplug efficiencies of 0.4% for a room temperature 3.2 μm device. W-superlattices of intermediate thickness were also found to be optimal for a full-cavity device with a bottom distributed Bragg reflector added. The resonant full cavity did strongly improve the peak spectral radiance, with a measured increase of four to five times for a 3.6 μm device, and a value that is >250 times larger than previously reported. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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